Joe Louis held the world Hvywt. title the longest of all time. Louis defended the belt successfully 25 times, a record.
"Chris John is the longest-reigning champion in boxing having held the WBA featherweight title since September of 2003. "
Joe Louis did, 11 years and 8 months, and he made 25 defenses and still found time to serve in the army for four years in between.
Joe Louis
EDGE
Triple H from 15/12/2002 until 21/09/2003
Joe Louis held the Title from June 22, 1937 until he announced his retirement on March 1, 1949.
Triple H Was The longest Reigning Champion In WWF...In WWE Batista Was The Longest Reigning Champion In Smackdown!
I think it was JBL.
Gillberg
brock lesnar
Tito Ortiz
i believe rocky marchino or mike Tyson
he has won the NWA heavyweight title 3 times in TNA and has won the TNA heavyweight title once
the longest held note for a brass instrument was Sara Ferrell which was held for 14 full measures.
The Great Khali has held the World Heavyweight belt one time